Home / 1,338.39-1,844.64-1,089.18

Finding the Fourth Proportional to 1,338.39, 1,844.64 and 1,089.18

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Solution

The fourth proportional to 1,338.39, 1,844.64 and 1,089.18 is: 1,501.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338.39 : 1,844.64 = 1,089.18 : x
  2. Step 2: Convert to fraction form
    1,338.39/1,844.64 = 1,089.18/x
  3. Step 3: Cross multiply
    1,338.39x = 1,844.64 × 1,089.18
  4. Step 4: Simplify right side
    1,338.39x = 2,009,145.00
  5. Step 5: Solve for x
    x = 2,009,145.00/1,338.39
  6. Step 6: Final answer
    x = 1,501.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.